Question

Generally when creating a PHP class I would do something as such

class Foo
{
    public function Foo(){}
    public function RandomFunction(){};
}
global $foo;
$foo = new Foo();
$foo->RandomFunction();

I have noticed that on the web people are frowning upon the global vars for classes but without it I would not be able to access the class inside other functions.

Now an alternative to this would be using static classes as such:

class Foo
{
    static public function RandomFunction(){}
}
Foo::RandomFunction();

My Question is this, is this the best alternative to global vars for classes? Or is there a better way to go about it all together?

Answer 1

In good OO practice, if a class needs to access an instance of another class, you pass object in as a parameter and then access it’s properties and methods from there.

If you have a well designed object model the code should be relatively clean and logical, however if you aren’t planning on creating a strict OO application, you probably shouldn’t worry about your classes being in global scope or not.